What is Transformer Vacuum Pressure Impregnation (VPI) Equipment?

Ausin Transformer VPI equipment is a specialized system designed for the high-performance insulation of H-class dry-type transformers and electrical coils. By utilizing a vacuum-pressure process, the equipment ensures deep penetration of insulating resin into the windings. It is compatible with standard dry-type transformers, German MORA technology, micro-motors, and power transformers. The process significantly enhances mechanical strength, insulation integrity, and provides superior resistance against moisture and mildew.

How does Transformer VPI Equipment Work?

Ausin Transformer VPI equipment operates by combining vacuum and high-pressure cycles. First, the vacuum eliminates air and moisture from the product and degasses the varnish. The pressure difference then drives the varnish to fully submerge the coils. Finally, by applying external pressure (air or nitrogen), the varnish is forced into the deepest gaps of the windings. This ensures a high-density, void-free filling that dramatically improves the coil's insulation performance and moisture resistance.

Why is Ausin VPI equipment essential for your production line?

Ausin VPI equipment is designed to elevate the quality of your electrical components. It reinforces the mechanical integrity of coils while providing a robust shield against moisture and mildew. Ensuring a 100% filling rate of insulating varnish, it boosts the insulation level and extends the product's lifespan. Beyond performance, our equipment is an eco-friendly and energy-saving solution that enhances your brand’s market competitiveness through superior product quality.

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Transformer Vacuum Impregnation Equipment

Name: Transformer Vacuum Impregnation Equipment
Brand: Ausin pipeline material&equipment co., ltd.
Availability: InStock

Transformer vacuum impregnation equipment (VPI) is a specialized industrial system used to enhance the insulation and durability of transformer components through vacuum pressure impregnation processes. Ausin VPI equipment integrates vacuum and pressure cycles to ensure thorough penetration of insulating materials (e.g., varnish or resin) into porous structures‌.

Transformer Vacuum Impregnation Equipment Specifications

Main components of equipment Working principle Features

Vertical Impregnating Tank: 1 set (Size customizable per order)
Vertical Storage Tank: 1 set (Size customizable per order)
Vacuum System: 1 set (Model SV200B)
Paint Return System: 1 set (Includes magnetic filter)
Pressure System: 1 set (With inert gas interface)
Dipping Tank Heating System: 1 set (Safe explosion-proof design)
Storage Tank Cooling System: 1 set (Equipped with cooler)
Ventilation System: 1 set (High-volume axial flow)
Hydraulic System: 1 set
Pneumatic System: 1 set
Measurement & Control System: 1 set
Spare Parts: Included free of charge

The operational process of the Ausin vacuum impregnation machine is designed for maximum penetration and insulation quality.

Vacuum Degassing: The VPI equipment product is placed in the chamber, and a vacuum is created to remove all trapped air and moisture from the coil.
Controlled Injection: After reaching the required vacuum level, treated insulating liquid (oil or varnish) is introduced into the chamber, with the volume precisely controlled via a flowmeter.
Full Saturation: The vacuum environment forces the liquid to fully penetrate every gap in the coil, significantly enhancing its impregnation capacity and improving overall insulation strength.

Ausin vacuum impregnation equipment is engineered for precision, flexibility, and reliability, with key features including:

Individual Volume & Speed Control: Each VPI equipment product's injection volume can be individually pre-set, and the impregnation speed is adjustable to meet specific process needs.
Space-Saving Design: Features an integrated, heated storage tank mounted above the main chamber for efficient operation and a smaller footprint.
Easy Product Loading: An optional motorized track or trolley system is available to simplify the loading and unloading of products.
Vacuum System Protection: A high-efficiency filter is installed to capture volatile vapors and moisture, protecting the vacuum pump and ensuring long-term performance.

Products

FAQs of Transformer Vacuum Impregnation Equipment

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How does Transformer VPI Equipment Work?

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Ausin Transformer VPI equipment operates by combining vacuum and high-pressure cycles. First, the vacuum eliminates air and moisture from the product and degasses the varnish. The pressure difference then drives the varnish to fully submerge the coils. Finally, by applying external pressure (air or nitrogen), the varnish is forced into the deepest gaps of the windings. This ensures a high-density, void-free filling that dramatically improves the coil's insulation performance and moisture resistance.
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Why is Ausin VPI equipment essential for your production line?



Ausin VPI equipment is designed to elevate the quality of your electrical components. It reinforces the mechanical integrity of coils while providing a robust shield against moisture and mildew. Ensuring a 100% filling rate of insulating varnish, it boosts the insulation level and extends the product's lifespan. Beyond performance, our equipment is an eco-friendly and energy-saving solution that enhances your brand’s market competitiveness through superior product quality.


What is Transformer Vacuum Pressure Impregnation (VPI) Equipment?



Ausin Transformer VPI equipment is a specialized system designed for the high-performance insulation of H-class dry-type transformers and electrical coils. By utilizing a vacuum-pressure process, the equipment ensures deep penetration of insulating resin into the windings. It is compatible with standard dry-type transformers, German MORA technology, micro-motors, and power transformers. The process significantly enhances mechanical strength, insulation integrity, and provides superior resistance against moisture and mildew.